Device for fixing and clamping bowl-shaped bottom part

Abstract

The utility model belongs to the technical field of part fixing and clamping tools, and discloses a device for fixing and clamping a bowl-shaped bottom part, which comprises a main bottom plate, a stand column combination, a side positioning seat, a side positioning adjusting block and a positioning block, the main bottom plate is fixed to a workbench through bolts, the bottom of the stand column combination is fixed to the center of the main bottom plate through bolts, the side positioning base is vertically fixed to the upper middle portion of one side face of the stand column combination, the side positioning adjusting block is installed on the side face of the end of the side positioning base, and the positioning block is installed on the top of the stand column combination. The bottom of the inner side of the bowl-shaped bottom part is supported by the positioning block, and the opening edge of the bowl-shaped bottom part is supported and positioned on the side positioning adjusting block. Machining of various shapes on the inclined face of the bowl-shaped bottom part can be completed through one-time clamping, the machined part is good in state consistency and small in thermal cutting deformation, the workpiece forming quality can be improved, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of parts fixing and clamping tooling technology, specifically relating to a device for fixing and clamping a bowl-shaped bottom part. Background Technology

[0002] The current issue involves the processing of special materials stamped into bowl-shaped bottom and conical wall parts. These parts cannot be machined using conventional machining equipment. A common processing method is to theoretically calculate the blank dimensions before stamping based on the neutral layer, and then stamp the part according to the material springback and die dimensions. The unfolded dimensions of the part's outer skin are calculated based on the dimensions of the formed part. The shape of the part is then created using thin sheet metal according to these dimensions. A scribing template is used to manually scribble lines around the blank, and the part is then cut into shape using a hand-operated cutting torch.

[0003] When using a manual scribing and cutting torch, the scribing template is attached to the outer skin of the blank and there is no reference edge. The scribing template is made of 0.5mm thick sheet metal, which is soft and can be placed arbitrarily during scribing. For parts with central symmetry, the height of the conical surfaces at both ends will be inconsistent after manual scribing. In addition, the waviness and perpendicularity of the conical surface of the parts cut by manual torch are poor, and the dimensions of the parts are out of tolerance. Matching cutting is required during assembly and welding, which increases the difficulty of assembly and welding. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] The purpose of this utility model is to provide a device for fixing and clamping bowl-shaped bottom parts, which can complete the processing of various shapes on the inclined surface of the bowl-shaped bottom parts in one clamping. The processed parts have good consistency and small thermal cutting deformation, which can improve the forming quality of the workpiece and increase production efficiency.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a device for fixing and clamping a bowl-shaped bottom part, which includes: a main base plate 1, a column assembly, a side positioning seat, a side positioning adjustment block 7, and a positioning block 8; the main base plate 1 is fixed to the workbench by bolts, the bottom of the column assembly is fixed to the center of the main base plate 1 by bolts, the side positioning seat is vertically fixed to the upper middle part of one side of the column assembly, the side positioning adjustment block 7 is installed on the side of the end of the side positioning seat, the positioning block 8 is installed on the top of the column assembly, the bowl-shaped bottom part is placed upside down on the positioning block 8, the bottom of the inner side of the bowl-shaped bottom part is supported by the positioning block 8, and the opening edge of the bowl-shaped bottom part is supported and positioned on the side positioning adjustment block 7.

[0008] The main base plate 1 has an opening for light, the position and size of which match the position and size of the fixing holes on the worktable. The main base plate 1 is fastened to the worktable by standard spring washers, C-grade flat washers and internal hexagonal head screws. The main base plate 1 also has four threaded holes, through which the bottom of the column assembly is fixed to the main base plate 1.

[0009] The column assembly includes a lower base plate 2, a column 3, and an upper base plate 4. The two ends of the column 3 are connected to the lower base plate 2 and the upper base plate 4 by fillet welding. The lower base plate 2 has through holes that match the threaded holes on the main base plate 1. The lower base plate 2 is fastened to the main base plate 1 by standard spring washers, C-grade flat washers, and hexagon socket head cap screws. The upper base plate 4 has 6 through holes for installing positioning blocks 8. The column 3 is made of cold-bent hollow rectangular tube.

[0010] Two pre-reserved light holes are provided on the upper base plate 4 at a position 30° off from the center, which are used to adjust the position of the positioning block 8 according to the shape of the bowl-shaped bottom part.

[0011] The side positioning seat includes a support plate 6 and a connecting plate 5. The connecting plate 5 has four elongated holes evenly distributed on it. The upper side wall of the column 3 has four threaded holes. The four elongated holes and the four threaded holes are matched. The connecting plate 5 is fixed to the side wall of the column 3 with flat washers and hexagon socket head cap screws. The support plate 6 is vertically welded to the connecting plate 5.

[0012] The support plate 6 has three threaded holes, and the side positioning adjustment block 7 has three elongated holes. The three threaded holes and the three elongated holes are fitted together, and the side positioning adjustment block 7 is installed on the support plate 6 with flat washers and hexagon socket head cap screws.

[0013] The side positioning adjustment block 7 has two support surfaces of different heights on its top for supporting the depth of the bowl-shaped bottom part; the side positioning adjustment block 7 also has two bosses on its top, located on the outer edges of the two support surfaces, for radial positioning and support of the bowl-shaped bottom part.

[0014] The positioning block 8 is installed on the top surface of the upper base plate 4. One end of the positioning block 8 is provided with a raised positioning platform, and a screw hole for mounting an elbow clamp is opened on the raised positioning platform. An elbow clamp is installed on the screw hole. A countersunk hole is opened in the middle of the positioning block 8, and the positioning block 8 is installed on the upper base plate 4 through the countersunk hole. An adjustment block mounting screw hole is opened at the other end of the positioning block 8, and an adjustment block 9 is fixedly installed for positioning the bottom of the bowl-shaped bottom part.

[0015] The bowl-shaped bottom part is placed on the positioning block 8 with its opening facing downwards. Two elliptical process holes are symmetrically opened on the bottom surface of the bowl-shaped bottom part. The raised positioning platform is placed in one of the elliptical process holes. The step of the raised positioning platform is positioned on one side of the process hole. The elbow clamp is pressed on the bottom surface of the bowl-shaped bottom part. The adjusting block 9 is placed in the other elliptical process hole to position the side of the other elliptical process hole, thereby positioning the bottom of the bowl-shaped bottom part.

[0016] Among them, on the positioning block 8, there is a raised positioning platform and a recessed platform on the other side; the thickness of the raised positioning platform and the thickness of the adjusting block 9 are consistent with the bottom thickness of the bowl-shaped bottom part.

[0017] (III) Beneficial Effects

[0018] The device for fixing and clamping bowl-shaped bottom parts provided by the above technical solution allows for the clamping of stamped bowl-shaped bottom parts by inverting the parts and placing them on the device, then pressing them with an elbow clamp. This processing method allows for the one-time positioning and processing of the outer shape of the bowl-shaped bottom part and the irregular holes on the conical surface, without the need for secondary clamping. The use of this device can improve product quality, increase production efficiency, and solve the problem of the inability to process bowl-shaped bottom parts. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the base plate in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure A is the front view and Figure B is the top view.

[0020] Figure 2 This is a schematic diagram of the column assembly in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure A is the front view and Figure B is the top view.

[0021] Figure 3 This is a schematic diagram of the side positioning seat in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure A is the front view, Figure B is the top view, and Figure C is the side view.

[0022] Figure 4 This is a schematic diagram of the side positioning adjustment block in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure A is the front view and Figure B is the top view.

[0023] Figure 5 This is a schematic diagram of the positioning block in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure I is the front view and Figure II is the side view.

[0024] Figure 6 This is a schematic diagram of the adjusting block in the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Figure A is the front view and Figure B is the top view.

[0025] Figure 7This is a schematic diagram of the overall structure of the device for fixing and clamping the bowl-shaped bottom part in this embodiment; where A, B, and C are the front view, side view, and top view, respectively.

[0026] Figure 8 This is a diagram showing the usage state of the device for fixing and clamping the bowl-shaped bottom part in this embodiment. Detailed Implementation

[0027] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0028] Reference Figures 1 to 8 As shown, the device for fixing and clamping the bowl-shaped bottom part in this embodiment includes a main base plate 1, a column assembly, a side positioning seat, a side positioning adjustment block 7, and a positioning block 8. The main base plate 1 is fixed to the workbench with bolts. The bottom of the column assembly is fixed to the center of the main base plate 1 with bolts. The side positioning seat is vertically fixed to the upper part of one side of the column assembly. The side positioning adjustment block 7 is installed on the side of the end of the side positioning seat. The positioning block 8 is installed on the top of the column assembly. The bowl-shaped bottom part is placed upside down on the positioning block 8. The bottom of the inner side of the bowl-shaped bottom part is supported by the positioning block 8. The opening edge of the bowl-shaped bottom part is supported and positioned on the side positioning adjustment block 7.

[0029] Figure 1 The main base plate 1 is shown. It has openings for light transmission, the position and size of which match the position and size of the fixing holes on the worktable. The main base plate 1 is secured to the worktable using standard spring washers, Class C flat washers, and hex socket head cap screws. The main base plate 1 also has four threaded holes, through which the bottom of the column assembly is fixed to the main base plate 1. The upper and lower surfaces of the main base plate 1 are in close contact with the worktable surface and the bottom surface of the column assembly, respectively.

[0030] Figure 2 The diagram shows the column assembly, which includes a lower base plate 2, a column 3, and an upper base plate 4. The two ends of the column 3 are connected to the lower base plate 2 and the upper base plate 4 by fillet welding. After welding, the surface is ground clean, the edges are blunted, and the weld must be free of defects such as incomplete penetration, cracks, and slag inclusions. A through hole is provided on the lower base plate 2, which matches the threaded hole on the main base plate 1. The lower base plate 2 and the main base plate 1 are then fixed together with bolts. Six through threaded holes are evenly distributed on the upper base plate 4 for installing positioning blocks 8. Two pre-drilled holes are provided on the upper base plate 4 at a position 30° off-center from the center for adjusting the fixed position according to the shape of the bowl-shaped bottom part. The upper end face of the lower base plate 2 and the upper and lower end faces of the upper base plate 4 all require machining to ensure a good fit between the mating surfaces. The lower base plate 2 is fastened to the main base plate 1 using standard spring washers, C-grade flat washers, and hexagonal head screws. The column 3 is made of cold-formed hollow rectangular tubing.

[0031] Figure 3The diagram shows a side positioning seat, which includes a support plate 6 and a connecting plate 5. The connecting plate 5 has four elongated holes evenly distributed on it. The upper side wall of the column 3 has four threaded holes. The connecting plate 5 is fixed to the side wall of the column 3 using flat washers and hex socket head cap screws. The elongated holes are suitable for adjusting the vertical positioning of parts with different depth dimensions. The support plate 6 is vertically welded to the connecting plate 5. The weld strength must be sufficient to stably support the weight of the bowl-shaped bottom part for a long time, ensuring that the position is absolutely stable and firm.

[0032] The side positioning seat can both position the outer shape and support the bowl-shaped bottom part, used for adjusting the positioning position and setting a reference. Three threaded holes are drilled through the support plate 6 for mounting the side positioning adjustment block 7.

[0033] Figure 4 The diagram shows the side positioning adjustment block 7, which is mounted on the support plate 6. It works in conjunction with the up-and-down adjustment of the connecting plate 5 and the opening size of the bowl-shaped bottom part to support and position the edge of the opening. The side positioning adjustment block 7 has an elongated hole, which, along with a flat washer and an internal hexagonal head screw, allows for adaptive adjustment of the side positioning adjustment block 7 relative to the opening size of the bowl-shaped bottom part. The top of the side positioning adjustment block 7 has two support surfaces of different heights to support the depth of the bowl-shaped bottom part. The top of the side positioning adjustment block 7 also has two bosses located on the outer edges of the two support surfaces, used for radial positioning and stable support of the bowl-shaped bottom part in response to changes in its opening size.

[0034] Figure 5 The diagram shows positioning block 8, which is installed on the top surface of the upper base plate 4. The bottom surface of positioning block 8 is designated as reference surface B, which is in contact with the top surface of the upper base plate 4. One end of positioning block 8 has a raised positioning platform with a threaded hole for mounting an elbow clamp. A countersunk hole is located in the middle of positioning block 8, through which positioning block 8 is installed on the upper base plate 4. The other end of positioning block 8 has a threaded hole for fixing an adjusting block 9. The bowl-shaped bottom part is placed on positioning block 8 with its opening facing downwards. Two symmetrical elliptical process holes are located on the bottom surface of the bowl-shaped bottom part. The raised positioning platform is placed inside one of the elliptical process holes, with the stepped surface of the raised positioning platform facing one side of the process hole for positioning. The elbow clamp is pressed against the bottom surface of the bowl-shaped bottom part to ensure stability and prevent movement during processing. The thickness of the raised positioning platform is the same as the thickness of the bottom surface of the bowl-shaped bottom part. The adjusting block 9 is placed inside the other elliptical process hole. Compared to the raised positioning platform, a recessed platform with a roughness of 3.2 is machined on the positioning block 8. The depth of the recessed platform is set according to the thickness of the bowl-shaped bottom part.

[0035] Figure 6The image shows adjustment block 9. Adjustment block 9 has an elongated hole. Adjustment block 9 is installed on the other end of positioning block 8 through the elongated hole, a C-grade flat washer, and an internal hexagonal head screw. Adjustment block 9 is placed in another process hole to position the side of the process hole. The positioning position is adjusted according to the bottom of the bowl-shaped part. The thickness of adjustment block 9 is consistent with the bottom thickness of the bowl-shaped part.

[0036] As can be seen from the above technical solution, this utility model has the following significant features:

[0037] 1. The process device for fixing the bowl-shaped bottom part is simple in design and easy to operate, and can be used for processing parts with different opening sizes within a certain range.

[0038] 2. The column assembly is designed as a two-layer structure, using cold-formed hollow rectangular tubing to connect the lower and upper base plates, enhancing the stability of the parts. The column assembly acts as a bridge between the parts and the worktable, designed according to the height and stroke of the machine tool's tool holder.

[0039] 3. The connecting plate, side positioning adjustment block, and positioning hole in the adjustment block are designed as elongated oval holes to facilitate the adjustment of the part position. At the same time, it can accommodate parts with the same shape but different opening sizes, improving the versatility of the tooling.

[0040] 4. Select an elbow clamp with appropriate closing force according to the opening size and weight of the part. Generally, select an elbow clamp with a closing force > 800N.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for securing a bowl-shaped bottom part, c h a r a c t e r i s e d in that, include: Main base plate (1), column assembly, side positioning seat, side positioning adjustment block (7), positioning block (8); the main base plate (1) is fixed to the workbench by bolts, the bottom of the column assembly is fixed to the center of the main base plate (1) by bolts, the side positioning seat is vertically fixed to the upper part of one side of the column assembly, the side positioning adjustment block (7) is installed on the side of the end of the side positioning seat, the positioning block (8) is installed on the top of the column assembly, the bowl-shaped bottom part is placed upside down on the positioning block (8), the bottom of the inner side of the bowl-shaped bottom part is supported by the positioning block (8), and the opening edge of the bowl-shaped bottom part is supported and positioned on the side positioning adjustment block (7).

2. The apparatus for clamping bowl-bottom parts as defined in claim 1, wherein The main base plate (1) has a light hole, the position and size of which match the position and size of the fixing hole on the workbench; the main base plate (1) is fastened to the workbench by a standard spring washer, a C-grade flat washer and an internal hexagonal head screw; the main base plate (1) also has 4 threaded holes, through which the bottom of the column assembly is fixed to the main base plate (1).

3. The apparatus of claim 2 wherein, The column assembly includes a lower base plate (2), a column (3), and an upper base plate (4); the two ends of the column (3) are connected to the lower base plate (2) and the upper base plate (4) by fillet welding; the lower base plate (2) has a through hole, which matches the threaded hole on the main base plate (1); the lower base plate (2) is fastened to the main base plate (1) by standard spring washers, C-grade flat washers and hexagonal head screws; the upper base plate (4) has 6 through holes evenly distributed for installing positioning blocks (8); the column (3) is made of cold-bent hollow rectangular tube.

4. The apparatus of claim 3 wherein, Two pre-reserved light holes are provided on the upper base plate (4) at a position 30° off from the center, for adjusting the position of the positioning block (8) according to the shape of the bowl-shaped bottom part.

5. The apparatus of claim 3 wherein, The side positioning seat includes a support plate (6) and a connecting plate (5). Four elongated holes are evenly distributed on the connecting plate (5). Four threaded holes are provided on the upper side wall of the column (3). The four elongated holes and the four threaded holes are matched, and the connecting plate (5) is fixed to the side wall of the column (3) with flat washers and hexagon socket head cap screws. The support plate (6) is vertically welded to the connecting plate (5).

6. The apparatus of claim 5 wherein, The support plate (6) has three threaded holes, and the side positioning adjustment block (7) has three elongated holes. The three threaded holes and the three elongated holes are fitted together, and the side positioning adjustment block (7) is installed on the support plate (6) with a flat washer and an internal hexagonal head screw.

7. The apparatus of claim 6 wherein, The side positioning adjustment block (7) has two support surfaces of different heights on its top for supporting the depth of the bowl-shaped bottom part; the side positioning adjustment block (7) also has two bosses on its top, located on the outer edges of the two support surfaces respectively, for radial positioning and support of the bowl-shaped bottom part.

8. The apparatus of claim 7 wherein, The positioning block (8) is installed on the top surface of the upper base plate (4). One end of the positioning block (8) is provided with a raised positioning platform, and a screw hole for elbow clamp installation is opened on the raised positioning platform. An elbow clamp is installed on the screw hole for elbow clamp installation. A countersunk hole is opened in the middle of the positioning block (8), and the positioning block (8) is installed on the upper base plate (4) through the countersunk hole. An adjustment block installation screw hole is opened at the other end of the positioning block (8), and an adjustment block (9) is fixedly installed for positioning the bottom of the bowl-shaped bottom part.

9. The apparatus of claim 8 wherein, The bowl-shaped bottom part is placed on the positioning block (8) with its opening facing downwards. Two elliptical process holes are symmetrically opened on the bottom surface of the bowl-shaped bottom part. The raised positioning platform is placed in one of the elliptical process holes. The step of the raised positioning platform is positioned on one side of the process hole. The elbow clamp is pressed on the bottom surface of the bowl-shaped bottom part. The adjusting block (9) is placed in the other elliptical process hole to position the side of the other elliptical process hole, thereby positioning the bottom of the bowl-shaped bottom part.

10. The apparatus of claim 9 wherein, On the positioning block (8), there is a raised positioning platform and a recessed platform on the other side; the thickness of the raised positioning platform and the thickness of the adjusting block (9) are consistent with the thickness of the bottom surface of the bowl-shaped bottom part.

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